A multi-function tap is a cutting tool that's designed to perform multiple functions in a single operation. These taps are versatile and can save time and effort by combining various machining tasks into one tool. The specific functions or features of a multi-function tap can vary depending on the design and purpose of the tool, but some common examples include:

Thread Cutting

Like a standard tap, a multi-function tap can be used to cut threads in materials such as metal, plastic, or wood.

Counterboring

Some multi-function taps may have a built-in counterbore or countersink feature. This allows them to cut a shallow recess around the threaded hole, providing a flat surface or a place for a fastener head to sit flush.

Drilling

Some multi-function taps can also include drilling capabilities. This means they can create the initial hole before threading, saving the need for a separate drilling operation.

Chamfering

Chamfering is the process of creating a beveled edge on the entrance of the hole. Multi-function taps may include chamfering features to prepare the hole for threading.

Deburring

Some multi-function taps can deburr the hole as they cut threads, removing sharp edges and metal burrs.

Coolant Delivery

In some machining applications, multi-function taps may have built-in coolant delivery systems to improve cutting efficiency and reduce heat.

Multi-function taps are used in various industrial applications, especially in situations where time and tool changes need to be minimized. These taps are designed to streamline the machining process, reduce the number of tool changes, and improve overall efficiency. However, the specific functions and features of a multi-function tap can vary, so it's important to choose the right tool for your specific application and machining requirements.